Rename Argument[-1] to Argument[this]

See: github/codeql#12556

Author: koesie10

extensions/ql-vscode/src/stories/data-extensions-editor/DataExtensionsEditor.stories.tsx

@@ -213,13 +213,13 @@ DataExtensionsEditor.args = {
     },
     "org.sql2o.Connection#createQuery(String)": {
       type: "summary",
-      input: "Argument[-1]",
+      input: "Argument[this]",
       output: "ReturnValue",
       kind: "taint",
     },
     "org.sql2o.Sql2o#open()": {
       type: "summary",
-      input: "Argument[-1]",
+      input: "Argument[this]",
       output: "ReturnValue",
       kind: "taint",
     },

extensions/ql-vscode/src/stories/data-extensions-editor/MethodRow.stories.tsx

@@ -47,7 +47,7 @@ MethodRow.args = {
   },
   modeledMethod: {
     type: "summary",
-    input: "Argument[-1]",
+    input: "Argument[this]",
     output: "ReturnValue",
     kind: "taint",
   },

extensions/ql-vscode/src/view/data-extensions-editor/MethodRow.tsx

@@ -64,8 +64,8 @@ export const MethodRow = ({
       const target = e.target as HTMLSelectElement;
 
       onChange(externalApiUsage, {
-        // If there are no arguments, we will default to "this", which is Argument[-1]
-        input: argumentsList.length === 0 ? "Argument[-1]" : "Argument[0]",
+        // If there are no arguments, we will default to "Argument[this]"
+        input: argumentsList.length === 0 ? "Argument[this]" : "Argument[0]",
         output: "ReturnType",
         kind: "value",
         ...modeledMethod,
@@ -167,9 +167,7 @@ export const MethodRow = ({
         {modeledMethod?.type &&
           ["sink", "summary"].includes(modeledMethod?.type) && (
             <Dropdown value={modeledMethod?.input} onInput={handleInputInput}>
-              <VSCodeOption value="Argument[-1]">
-                Argument[-1]: this
-              </VSCodeOption>
+              <VSCodeOption value="Argument[this]">Argument[this]</VSCodeOption>
               {argumentsList.map((argument, index) => (
                 <VSCodeOption key={argument} value={`Argument[${index}]`}>
                   Argument[{index}]: {argument}
@@ -183,9 +181,7 @@ export const MethodRow = ({
           ["source", "summary"].includes(modeledMethod?.type) && (
             <Dropdown value={modeledMethod?.output} onInput={handleOutputInput}>
               <VSCodeOption value="ReturnValue">ReturnValue</VSCodeOption>
-              <VSCodeOption value="Argument[-1]">
-                Argument[-1]: this
-              </VSCodeOption>
+              <VSCodeOption value="Argument[this]">Argument[this]</VSCodeOption>
               {argumentsList.map((argument, index) => (
                 <VSCodeOption key={argument} value={`Argument[${index}]`}>
                   Argument[{index}]: {argument}